670673345 has 16 divisors (see below), whose sum is σ = 819590400. Its totient is φ = 526718400.

The previous prime is 670673321. The next prime is 670673347. The reversal of 670673345 is 543376076.

It is not a de Polignac number, because 670673345 - 2⁶ = 670673281 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (670673347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180860 + ... + 184530.

It is an arithmetic number, because the mean of its divisors is an integer number (51224400).

Almost surely, 2^670673345 is an apocalyptic number.

It is an amenable number.

670673345 is a deficient number, since it is larger than the sum of its proper divisors (148917055).

670673345 is a wasteful number, since it uses less digits than its factorization.

670673345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4336.

The product of its (nonzero) digits is 317520, while the sum is 41.

The square root of 670673345 is about 25897.3617382157. The cubic root of 670673345 is about 875.3270483563.

The spelling of 670673345 in words is "six hundred seventy million, six hundred seventy-three thousand, three hundred forty-five".